CLUBROOT FOUND ON CANOLA IN NORTH DAKOTA
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NCGA Advises Best Management Practices for Disease Prevention
Bismarck, ND -- North Dakota State University Plant Pathologists report that in September, plants from one canola field in Cavalier County in northeast North Dakota showed symptoms of clubroot galls on their roots. The identity of the disease was confirmed using DNA testing and a bioassay. Clubroot is a soil-borne disease caused by a microbe, Plasmodiophora brassicae. It affects the roots of cruciferous crops such as canola, mustard, camelina, oilseed radish and cruciferous vegetables such as arugula, broccoli, Brussels sprouts, cabbage, cauliflower, kohlrabi, kale, rutabaga and turnip. Cruciferous weeds such as stinkweed, wild mustard and Shepherd's purse can also serve as hosts.
"Clubroot has been found in several areas of Canada, with Manitoba being the most recent, so it is not a surprise that it has found its way south," said Barry Coleman, Executive Director of the Northern Canola Growers Association. "The good news is, there is a lot known about the disease and it can be managed." "Our geographic region also provides some advantages in being able to prevent the spread of clubroot given the higher pH of our soils and their tendency to warm up earlier in the growing season." "It is more difficult for clubroot to take hold when soils have a pH above 7.0."
The Northern Canola Growers Association reminds farmers to follow best management and disease prevention practices as they prepare for the 2014 crop year. Information on reducing clubroot risk through BMP's for disease prevention in canola will be discussed at the NCGA's Annual Canola Expo on Wednesday, December 11, in Langdon, North Dakota. In addition, NDSU is developing a Clubroot Management Guide for canola growers that will be distributed this winter and will be available on the Northern Canola Growers Association website at www.northerncanola.com. Further information on controlling clubroot can also be found at the Canola Council of Canada website at www.clubroot.ca.
Growers can manage the disease through:
-- proper equipment cleaning to reduce the movement of soil on field equipment.
-- the use of clubroot-resistant canola varieties,
-- proper crop rotation. Tight canola rotations do not cause clubroot, but can increase the rate of spore build up.
-- good weed management of cruciferous hosts.
Northstar Agri Industries, a subsidiary of PICO Holdings, Inc. and the first purpose-built canola processing facility in the U.S., and Bayer CropScience, the innovators of the consistently vigorous and higher-yielding InVigor canola seed, are pleased to announce the addition of the InVigor® L252 hybrid to the Northstar Star Growers High Oil Contract.
“The Northstar contract pays growers an extra 5 percent on the first 1,250 pounds per acre of grain. We have very demanding criteria for admission to the program: hybrids need to be top performers in both yield and oil percentage,” said Neil Juhnke, President and COO, Northstar. “The seed must yield at least 2 to 3 percent more oil when crushed over others to even be considered for entry. L252 is a real win-win. The farmer gets to grow top yielding hybrids; he or she gets a premium; and our plant gains efficiency with the higher oil.”
“Northstar has taken a leadership position in North America with its high-oil contract program,” said Tom Schuler, Strategic Business Lead for Seeds and Traits North America. “L252 allows growers in Northeast North Dakota and Northwest Minnesota to benefit from this premium, while continuing to benefit from top InVigor genetics that have been field-proven on their farms.”
Recently launched for the 2014 growing season, L252 is the first InVigor hybrid with premium-level oil content. This mid- to full-maturing hybrid offers everything farmers have come to expect from InVigor genetics: early-season vigor, outstanding yield and the highest rating for blackleg resistance. L252 features the LibertyLink® trait, which gives farmers an alternative to glyphosate-tolerant systems and a tool to fight herbicide resistance.
“We are so pleased to add a LibertyLink hybrid to our contract. This now gives our growers access to the full range of herbicide systems available in canola today,” said Jay Bjerke, Agronomic Services Manager, Northstar. “Liberty is a great system to rotate with other herbicide systems to enhance volunteer control and prevent the establishment of herbicide-resistant weeds. It’s a win-win for everyone.”
From Janet Knodel in this week's NDSU Crop & Pest Report
The new generation of adult flea beetles is emerging and feeding on developing pods of canola. This is the overwintering generation that will emerge next spring. Usually the upper or younger pods and later seeded crops are most impacted. This feeding damage results in poor seed fill, premature pod drying, or pod shattering during swathing or direct combining. However, yield loss from pod feeding is uncommon, because canola obtains most of its yield from the lower pods. No insecticides are recommended for control of flea beetles feeding on canola pods, unless populations are extremely high, and there is significant feeding on the lower pods. No economic threshold has been developed.